Home / 9,321.91-13,982.41-3,478.06

Finding the Fourth Proportional to 9,321.91, 13,982.41 and 3,478.06

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Solution

The fourth proportional to 9,321.91, 13,982.41 and 3,478.06 is: 5,216.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.91 : 13,982.41 = 3,478.06 : x
  2. Step 2: Convert to fraction form
    9,321.91/13,982.41 = 3,478.06/x
  3. Step 3: Cross multiply
    9,321.91x = 13,982.41 × 3,478.06
  4. Step 4: Simplify right side
    9,321.91x = 48,631,687.19
  5. Step 5: Solve for x
    x = 48,631,687.19/9,321.91
  6. Step 6: Final answer
    x = 5,216.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.